Device capable of manually hoisting and carrying materials

By designing a device for manually lifting and handling materials, using wire ropes and hand cranks to suspend materials, and combining limiting and buffer components, the problems of low efficiency and poor stability of tower crane lifting were solved, achieving efficient and stable material handling, saving costs and construction time.

CN121202016APending Publication Date: 2025-12-26CHINA CONSTR EIGHT ENG DIV CORP LTD
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Patent Information

Application Number
CN202511442900.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-10
Publication Date
2025-12-26

AI Technical Summary

Technical Problem

In current construction, tower cranes are inefficient at lifting materials, slow material transfer leads to decreased construction efficiency, the inability to lift materials from multiple trades simultaneously results in wasted construction time, increased tower crane rental costs, and unstable material movement.

Method used

A device for manually lifting and transporting materials has been designed, including a flat frame, wheels, a support frame, a hand crank, a limiting mechanism, a support mechanism, and a buffer assembly. The material is suspended by a wire rope and hooks, lifted by the hand crank, and transported by moving the wheels. The limiting and buffer assemblies ensure the stability of the material.

Benefits of technology

It improves construction efficiency, reduces the frequency of tower crane use, saves costs, and ensures good stability in material hoisting, which is in line with the concept of green construction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of building construction, in particular to a manual lifting and material carrying device which comprises a flat plate frame, a plurality of wheels are rotatably mounted on the flat plate frame, a supporting frame is fixedly mounted on the flat plate frame, a fixing shell is fixedly mounted on the supporting frame, a hand crank is rotatably mounted on the fixing shell, and a lifting handle is fixedly mounted on the hand crank. The device further comprises a limiting mechanism and a supporting mechanism. Binding materials are hung through a hook, meanwhile, the binding materials are hooked through cooperation of a reinforcing hook and a limiting bolt, in the hoisting process, the binding materials drive a sleeve shell to rotate with a shaft block as the center through the reinforcing hook, a rotating sleeve, a side block, a connecting rod and an extending plate, and after the binding materials are hoisted, the binding materials are fixed through a fixing rod. The positioning bolts are screwed into the inner sides of the positioning holes through the inner sides of the circular holes in the proper positions to fix the sleeve shell, so that the hoisted materials are reinforced through the reinforcing hooks, and the bundled materials are prevented from shaking and falling off in the hoisting and moving process.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a device capable of manually hoisting and transporting materials. BACKGROUND

[0002] In the process of building construction, hoisting devices are needed to transport materials.

[0003] A small-sized manual hoisting device is disclosed in Chinese Patent No. CN209618745U, which comprises a boom, a hoisting structure and a fixing assembly. The hoisting structure is arranged at the bottom of the front end of the boom, and the boom is installed on the side plate of the ship body through the fixing assembly. The hoisting structure comprises a pulley, a sling and a hook. The pulley is arranged at the bottom of the front end of the boom. One end of the sling is fixed to the pulley, and the other end of the sling is hung down around the pulley. The hook is sleeved on the sling. The fixing assembly comprises an upper ear plate, a lower ear plate and a connecting shaft. The upper ear plate and the lower ear plate are fixedly installed on the side plate. The tail end of the boom is sleeved outside the connecting shaft and can rotate around the connecting shaft. The connecting shaft is fixed through the upper ear plate and the lower ear plate.

[0004] The above-mentioned patent is flexible and small in size, and can be manually operated and utilize the principle of lever to reduce labor intensity while ensuring good hoisting effect. It is convenient to fold and unfold.

[0005] However, the above-mentioned patent has the following disadvantages: At present, in the process of building construction, the on-site hoisting and transferring of materials is mainly completed by tower cranes. Workers often wait for materials at the working face, and the slow transfer of materials leads to a decrease in construction efficiency. Multiple types of materials cannot be hoisted and transported simultaneously, which leads to waste of construction period. The amount of materials required at one time is much smaller than the power of the tower crane, which increases the rental cost of the tower crane. In addition, the materials shake during transportation, and the transportation stability is poor.

[0006] Therefore, the present application provides a device capable of manually hoisting and transporting materials. SUMMARY

[0007] The present application aims to provide a device capable of manually hoisting and transporting materials to solve the problems raised in the background art.

[0008] The technical solution adopted by the present application to solve the technical problems is as follows: A device capable of manually hoisting and transporting materials comprises a flat plate frame, a plurality of wheels rotatably installed on the flat plate frame, a support frame fixedly installed on the flat plate frame, a fixed shell fixedly installed on the support frame, a hand crank rotatably installed on the fixed shell, a limiting mechanism and a supporting mechanism.

[0009] The limiting mechanism is arranged between the fixed shell and the hand crank. The limiting mechanism comprises a locking assembly arranged on the fixed shell, and a ratchet fixedly installed on the hand crank.

[0010] The support mechanism is arranged on the platform, and comprises a rotating assembly arranged on the platform, a connecting rod arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod, a positioning assembly arranged between the platform and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

[0011] Further, a cantilever is fixedly installed on the support frame, and a wire passing block is fixedly installed on the cantilever.

[0012] Further, a wire winding drum is fixedly installed on the hand crank, and a steel wire rope is wound on the wire winding drum and movably connected with the cantilever and the wire passing block.

[0013] Further, the locking assembly comprises a fixed block fixedly installed on the fixed shell, a clamping block movably connected with the ratchet wheel and rotatably installed on the fixed block, and a torsion spring connected between the fixed block and the clamping block.

[0014] Further, a limiting piece is fixedly installed on the fixed block and abuts against the clamping block.

[0015] Further, a fixed ring is connected to an end of the steel wire rope, and a hook is movably installed on the fixed ring.

[0016] Further, a bottom shell is fixedly installed on the platform, and a plurality of weight blocks are placed on the bottom shell.

[0017] Further, the rotating assembly comprises a shaft block fixedly installed on the platform, a sleeve shell rotatably installed on the shaft block, and an extension plate slidably installed on the inner side of the sleeve shell and rotatably connected with the connecting rod, the reinforcing assembly comprises two symmetrically fixed blocks fixedly installed on the connecting rod, a rotating sleeve rotatably installed on each fixed block, a reinforcing hook fixedly installed on the rotating sleeve, and a limiting bolt threadedly installed on the reinforcing hook.

[0018] Further, the positioning assembly comprises a side block fixedly installed on the platform, a plurality of circular holes formed in the side block, a positioning bolt movably installed on the inner side of one of the circular holes, and a positioning hole formed in the sleeve shell and threadedly connected with the positioning bolt.

[0019] Further, the buffer assembly comprises a movable block fixedly installed on the sleeve shell, a spring connected to the movable block, and a buffer plate slidably connected with the movable block and connected to an end of the spring.

[0020] The present application has the following beneficial effects:

[0021] (1) The present application suspends the bundled material by using the hook, and moves the connecting rod to drive the extension plate out of the inner side of the sleeve, drives the reinforcing hook to move to the bundled material through the side block and the rotating sleeve, and tightens the limiting pin on the reinforcing hook to hook the bundled material. During the lifting process, the bundled material is driven by the reinforcing hook, the rotating sleeve, the side block, the connecting rod and the extension plate to rotate the sleeve around the shaft block, and the positioning pin is screwed into the inner side of the positioning hole through the inner side of the appropriate position of the round hole to fix the sleeve, so as to reinforce the lifted material by the reinforcing hook and prevent the bundled material from shaking and falling during the lifting movement.

[0022] (2) The present application is provided with a buffer plate, and when the lifted material needs to be dropped, the positioning pin is screwed out of the inner side of the positioning hole, so that the bundled material drives the sleeve to rotate during the falling process, and the sleeve drives the buffer plate to move through the movable block and the spring. When the buffer plate contacts the ground, the buffer plate provides buffering force for the falling material under the support of the spring elastic force, and protects the material.

[0023] (3) The present application rotates the hand crank to drive the ratchet to rotate, drives the ratchet to drive the clamping block, and the clamping block is centered on the fixed block. At the same time, the clamping block continuously resets quickly under the support of the torsional spring during the movement, and the clamping block is clamped on the ratchet, so that the hand crank cannot be rotated back, and accidents during lifting can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described below in combination with the drawings and examples.

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0026] Figure 2 It is a schematic diagram of the hook three-dimensional structure of the present application;

[0027] Figure 3 It is a schematic diagram of the side block three-dimensional structure of the present application;

[0028] Figure 4 It is a schematic diagram of the sleeve plane section structure of the present application;

[0029] Figure 5 It is a schematic diagram of the connecting rod three-dimensional structure of the present application;

[0030] Figure 6 It is a schematic diagram of the fixed shell first perspective three-dimensional structure of the present application;

[0031] Figure 7 It is a schematic diagram of the fixed shell second perspective three-dimensional structure of the present application.

[0032] In the diagram: 1. Flatbed frame; 2. Wheel; 3. Support frame; 4. Cantilever; 5. Cable guide block; 6. Fixed shell; 7. Hand crank; 8. Winding spool; 9. Wire rope; 10. Ratchet; 11. Fixed block; 12. Locking block; 13. Torsion spring; 14. Limiting plate; 15. Fixing ring; 16. Hook; 17. Bottom shell; 18. Load-bearing block; 19. Shaft block; 20. Sleeve; 21. Extension plate; 22. Connecting rod; 23. Side block; 24. Rotating sleeve; 25. Reinforcing hook; 26. Limiting bolt; 27. Side block; 28. Round hole; 29. ​​Positioning bolt; 30. Positioning hole; 31. Movable block; 32. Spring; 33. Buffer plate. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1-7 As shown, the present invention discloses a manually operated lifting and material handling device, comprising a flat frame 1, multiple wheels 2 rotatably mounted on the flat frame 1, a support frame 3 fixedly mounted on the flat frame 1, a cantilever 4 fixedly mounted on the support frame 3, a wire guide block 5 fixedly mounted on the cantilever 4, a fixed shell 6 fixedly mounted on the support frame 3, a hand crank 7 rotatably mounted on the fixed shell 6, a winding drum 8 fixedly mounted on the hand crank 7, a steel wire rope 9 movably connected to the cantilever 4 and the wire guide block 5 wound on the winding drum 8, a fixed ring 15 connected to the end of the steel wire rope 9, a hook 16 movably mounted on the fixed ring 15, a bottom shell 17 fixedly mounted on the flat frame 1, multiple load blocks 18 placed on the bottom shell 17, and also including a limiting mechanism and a support mechanism;

[0035] Specifically, the cantilever 4 has a groove. Workers move multiple load blocks 18 to the inside of the base shell 17, wind the wire rope 9 onto the winding drum 8, and then lock the wire rope 9 into the groove of the cantilever 4. The wire guide block 5 is used to lift the wire rope 9 and connect the hook 16 to the wire rope 9. The device is then assembled. By turning the hand crank 7, the winding drum 8 is rotated, allowing the winding drum 8 to unwind the wire rope 9. The wire rope 9 then moves the hook 16 downward through the fixing ring 15, making it easier for workers to move the hook 16 to the bundled material for hooking. By turning the hand crank 7 in the opposite direction, the winding drum 8 winds the wire rope 9, allowing the hook 16 to lift the bundled material. By pushing the support frame 3, the wheels 2 roll on the ground, thus transporting the material.

[0036] The device is welded by steel pipes. When in use, the material is firmly bound, the lifting point is set, the device is horizontally placed on the ground, the hook 16 of the device is hung on the lifting point, one person rotates the hand crank 7, two people assist in lifting the material on both sides, after the material is lifted off the ground, the device is pushed to the material unloading point or the installation point, and then the material is slowly lowered, thereby completing the operation. The device can solve the lifting and installation of small weight materials, release the tower crane for full load work, greatly increase the construction efficiency, save the construction period, reduce the total tower crane operation shifts, save the cost, and is simple to manufacture, convenient to use, high in utilization rate, recyclable, and in line with the concept of green construction.

[0037] In the embodiment, the limiting mechanism is arranged between the fixed shell 6 and the hand crank 7. The limiting mechanism comprises a locking assembly arranged on the fixed shell 6. The hand crank 7 is fixedly installed with a ratchet wheel 10. The locking assembly comprises a fixed block 11 fixedly installed on the fixed shell 6. The fixed block 11 is rotatably installed with a clamping block 12 clamped with the ratchet wheel 10. The fixed block 11 and the clamping block 12 are jointly connected with a torsion spring 13. The fixed block 11 is fixedly installed with a limiting piece 14 abutting with the clamping block 12.

[0038] Specifically, the limiting piece 14 can limit the movement of the clamping block 12. By rotating the hand crank 7, the hand crank 7 drives the ratchet wheel 10 to rotate, the ratchet wheel 10 drives the clamping block 12 to move around the fixed block 11. Meanwhile, the clamping block 12 is continuously and quickly reset under the elastic support of the torsion spring 13 during the movement. The clamping block 12 clamps the ratchet wheel 10, thereby preventing the hand crank 7 from rotating back, and avoiding accidents during the lifting process.

[0039] During the pay-off process, the clamping block 12 is moved away from the ratchet wheel 10 by rotating the clamping block 12. The hand crank 7 can be rotated.

[0040] In the embodiment, the supporting mechanism is arranged on the flat plate frame 1. The supporting mechanism comprises a rotating assembly arranged on the flat plate frame 1. The rotating assembly is provided with a connecting rod 22. The connecting rod 22 is provided with a reinforcing assembly. The flat plate frame 1 and the rotating assembly are jointly provided with a positioning assembly. The rotating assembly comprises an axle block 19 fixedly installed on the flat plate frame 1. The axle block 19 is rotatably installed with a sleeve shell 20. The inner side of the sleeve shell 20 is slidably installed with an extension plate 21 rotatably connected with the connecting rod 22. The reinforcing assembly comprises two symmetrical edge blocks 23 fixedly installed on the connecting rod 22. Each edge block 23 is rotatably installed with a rotating sleeve 24. The rotating sleeve 24 is fixedly installed with a reinforcing hook 25. The reinforcing hook 25 is screwedly installed with a limiting pin 26. The positioning assembly comprises a side block 27 fixedly installed on the flat plate frame 1. The side block 27 is provided with a plurality of circular holes 28. The inner side of one of the circular holes 28 is movably installed with a positioning pin 29. The sleeve shell 20 is provided with a positioning hole 30 screwedly connected with the positioning pin 29.

[0041] Specifically, the bundled material is hung by using the hook 16, and the extension plate 21 is moved out of the inside of the sleeve 20 by moving the connecting rod 22, so that the connecting rod 22 drives the reinforcing hook 25 to move to the bundled material through the side block 23 and the rotating sleeve 24, the limiting pin 26 is screwed and fixed on the reinforcing hook 25, so that the reinforcing hook 25 and the limiting pin 26 cooperate to hook the bundled material, and in the lifting process, the bundled material drives the sleeve 20 to rotate around the shaft block 19 through the reinforcing hook 25, the rotating sleeve 24, the side block 23, the connecting rod 22 and the extension plate 21, and after the bundled material is lifted, the positioning pin 29 is screwed into the inside of the positioning hole 30 through the inside of the circular hole 28 at a suitable position to fix the sleeve 20, so as to reinforce the lifted material by the reinforcing hook 25, and prevent the bundled material from shaking and falling during lifting and moving.

[0042] In the embodiment, the rotating assembly is provided with a buffer assembly, which includes a movable block 31 fixedly installed on the sleeve 20, a spring 32 connected to the movable block 31, and a buffer plate 33 in sliding connection with the movable block 31 and connected to the end of the spring 32.

[0043] Specifically, by installing the buffer plate 33, when the lifted material needs to be dropped, the positioning pin 29 is screwed out of the inside of the positioning hole 30, so that the bundled material drives the sleeve 20 to rotate during the falling process, and the sleeve 20 drives the buffer plate 33 to move through the movable block 31 and the spring 32, and when the buffer plate 33 contacts the ground, the buffer plate 33 provides buffering force for the falling material under the support of the spring 32, and protects the material.

[0044] Working principle: the workers carry multiple heavy blocks 18 to the inner side of the bottom shell 17, wind the steel wire rope 9 on the winding drum 8, then clamp the steel wire rope 9 in the groove of the cantilever 4, lift through the wire block 5, connect the hook 16 with the steel wire rope 9, complete the assembly of the device, rotate the hand crank 7, make the hand crank 7 drive the winding drum 8 to rotate, make the winding drum 8 pay out the steel wire rope 9, make the steel wire rope 9 drive the hook 16 to move downward, facilitate the workers to move the hook 16 to the bundled materials to hook, use the hook 16 to hang the bundled materials, move the connecting rod 22 at the same time, make the connecting rod 22 drive the extension plate 21 to move out of the inner side of the sleeve shell 20, make the connecting rod 22 drive the reinforcing hook 25 to move to the bundled materials through the side block 23 and the rotating sleeve 24, tighten the limiting pin 26 on the reinforcing hook 25, make the reinforcing hook 25 and the limiting pin 26 cooperate to hook the bundled materials, in the process of lifting, the bundled materials drive the sleeve shell 20 to rotate around the shaft block 19 through the reinforcing hook 25, the rotating sleeve 24, the side block 23, the connecting rod 22 and the extension plate 21, after lifting the bundled materials, screw the positioning pin 29 through the inner side of the round hole 28 into the inner side of the positioning hole 30 to fix the sleeve shell 20, use the reinforcing hook 25 to reinforce the lifted materials, rotate the hand crank 7 in the opposite direction, make the winding drum 8 wind the steel wire rope 9, make the hook 16 lift the bundled materials, push the support frame 3, make the wheels 2 roll on the ground, and carry the materials.

[0045] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for manually lifting and transporting materials, comprising a flat plate (1), on which a plurality of wheels (2) are rotatably mounted, a support frame (3) is fixedly mounted on the flat plate (1), a fixed housing (6) is fixedly mounted on the support frame (3), and a hand crank (7) is rotatably mounted on the fixed housing (6), characterized in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

2. A device for manually lifting and transporting material as claimed in claim 1, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

3. A device for manually lifting and transporting material as claimed in claim 2, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

4. A device for manually lifting and transporting material as claimed in claim 3, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

5. A device for manually lifting and transporting material as claimed in claim 4, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

6. A device for manually lifting and transporting material as claimed in claim 5, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

7. A device for manually lifting and transporting material as claimed in claim 6, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

8. A device for manually lifting and transporting material according to claim 7, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

9. A device for manually lifting and transporting material according to any one of claims 1-8, characterized in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

10. A device for manually lifting and transporting material as claimed in claim 9, characterised in that: The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly. The supporting mechanism is arranged on the flat board support (1), and the supporting mechanism comprises a rotating assembly arranged on the flat board support (1), a connecting rod (22) arranged on the rotating assembly, a reinforcing assembly arranged on the connecting rod (22), a positioning assembly arranged between the flat board support (1) and the rotating assembly, and a buffer assembly arranged on the rotating assembly.

Citation Information

Patent Citations

  • Small manual hoisting device

    CN209618745U